Footwear sole



FIG. 1 is a rear perspective view of a footwear sole showing our new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof. The broken lines in FIG. 5 illustrate the portion of the design that forms no part of the claim.

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken line showing of a shoe upper in the FIGS. 1, 2, 3, 6 and 7 illustrate the portion of the design that forms no part of the claim.

The broken lines showing an oval and five circles in FIG. 2 define the boundaries of the design, with the broken lines themselves, and the areas within, forming no part of the claim. 

The ornamental design for a footwear sole, as shown and described. 